My Hero Academia boasts a variety of strong quirks capable of incredible things, and not all powers are created equal. From dazzling audiences to leveling city blocks, some meta abilities stand out as truly extraordinary.
However, these quirks would not be half as powerful without the person behind them; in fact, in certain cases, they're even useless. It's time to unravel some tremendous superpowers that would be nothing without the minds and bodies of the characters supporting them, acknowledging the competence and skill of their users.
10 Twice - Double
Jin's "Double" seems like the perfect weapon, simultaneously useful for offense, defense, and creative teamwork. Twice can copy himself or his colleagues, whose copies can them duplicate themselves again. This is particularly useful for villains with tremendous destructive potential like Dabi.
However, it comes with a stipulation; Twice must know the sizes of the person he attempts to recreate to successfully clone them. Therefore, if an ordinary person was bestowed with this quirk and suddenly expected to use it, it's unlikely that they could even copy themselves, let alone anyone else.
9 Stain - Bloodcurdle
Stain's quirk, "Bloodcurdle," paralyzes his victims after he has tasted their blood. Though this may seem useful to an average person in a fight, Chizome possesses qualities which make it terrifying
Namely, his athleticism and serrated weaponry grant his skills viability against more visually impressive foes like Todoroki. His elongated tongue is conducive to licking the blood from his weapon and does not force him to commit much to leaning into his sword tip (where he would be the most vulnerable). Without Stain's skills as a warrior and depravity as an individual, it would not be useful in most situations.
8 Mirio - Permeation
Mirio's "Permeation" allows him to phase any part of his body through anything at any time. As a result, he is able to defeat several henchmen even while disoriented and annihilate the entirety of Class 1-A in a fight.
However, the skill to use it is unappreciated. Permeation requires technique to master, and if used improperly, one can fall into the center of the earth. It is why Mirio's father did not explicitly encourage his son into hero work and another example of senior's unfailing courage in the face of danger.
7 Momo Yaoyorozu - Creation
Momo's quirk "Creation" is unimaginably powerful. She can conjure anything she wants with her body at the expense of energy (eliciting a robust food intake, much like her classmate, Sato).
It's not as fun of a quirk to practice as one might think. She must fundamentally understand the particle composition and density of every object she hopes to create. In the hands of an average person where this information may either be difficult to understand or retain, they would not be able to apply it as fluidly as she does.
6 Eri - Rewind
Eri's "Rewind" is arguably the most useful quirk in the entire anime universe. Concentrating the power of the horn on her forehead, she can rewind time, writing off significant injuries to herself or her allies as if they were a dream.
Such unbridled power comes at a cost; she cannot control her quirk, making it far more of a curse than a utility. When unchecked, Rewind can be a hazard to those around its user and deadly to the people touching her. If Aizawa was not near to disable her quirk, it's likely she would have accidentally killed Midoriya while using it.
5 Mei Hatsume - Zoom
Mei Hatsume's "Zoom" may not bear much combat utility superficially, but it has allowed her to design some of the finest gadgets to have ever left the school's laboratories. A well-known example is Deku's gauntlets, marvelously absorbing the shock his quirk causes and allowing him to channel more power than he would otherwise be able to use.
Being able to focus one's eyes on a certain area would not be nearly as useful without her expertise as an engineer. Like Momo, her intelligence is what makes her quirk special, and without it, it may as well be convenient binoculars.
4 Endeavor - Hellflame
Endeavor's "Hellflame" is a potent quirk that allows him to project flames anywhere on his body. Its intense force was enough to create a solar flare against his Nomu foe, igniting the entire sky and disintegrating the monster's ashes.
Predictably, channeling this immense force raises his body heat. Enji endeavors to use his flames responsibly to counteract this, though an ordinary person might not know the limits of the fire. Should it be used too recklessly, they would have just as much a chance of harming themselves as their opponent.
3 Eraserhead - Erasure
Though Eraserhead's "Erasure" may be crucial to the hero's success (such as saving Tsuyu from Shigaraki and Deku from Eri), it is only viable in a fight under the provision that the person using it is a competent warrior. It puts both combatants on the same level for as long as the quirk user has their eyes open.
Consequently, it isn't applicable in the hands of an average person going up against hardened criminals. Without Aizawa's experience to compliment his quirk, it's barely a support utility.
2 All For One - All For One
The ability to steal quirks makes All For One the deserving Symbol of Evil to Japan's underworld. However, the quirk individually is weak; it compounds with every victory he attains over stronger opponents, eventually snowballing into an unstoppable juggernaut.
Nonetheless, if whoever is given All For One is careless with the quirk, they would be defeated before they would have the chance to steal anything and begin their progression in power. It is only effective because its host knows how to navigate delicate social situations and win the hearts of his followers.
1 Izuku Midoriya - One For All
Midoriya's slow mastery of One For All has been a focal point of the series, especially in its earlier half. As the quirk grows in strength with every passing user, it also becomes more difficult to control, to the extent where Deku had to train vigorously under All Might to survive even using it once.
In unprepared hands, a robust application of One For All would blow a normal person's limbs clean off. Much of the quirk revolves around restraint, making it a deadly liability to someone unprepared to use it.